DS9 is one people keep forgetting.Also as seen in Generations, the Kelvin movies and Disco season 2, and more I’m sure
Sisko is wearing the TNG series uniform when he first boards DS9, and later in Season 4 when he's reassigned to Starfleet Command for that two parter, he switches back to the TNG Series uniform, and everyone (I'm pretty sure, I didn't pay that close attention) at Starfleet command wears the TNG series uniform.
While Generations also used both uniforms like you said, DS9 didn't mix the uniforms like the movie did, they were shown to be separate from each other because Sisko switched to it when he got the new assignment.
https://memory-alpha.fandom.com/wik...ate_2360s-early_2370s)#Background_information
The DS9 team only used TNG uniform on officers from Starfleet Command or from a Starship (other than the Defiant).
And that was thrown away when Voyager/Generations came along and also used the DS9 uniform.
Edit: also I completely forgot that DS9 aired along side TNG for a few seasons so yeah, there's also that.
Also Riker showed up in an episode of Voyager, wearing the TNG uniform AND Badge.
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